Device for winding the armatures of electric machines



(No Model.) 7

R. A. JOHNSTON & W.,H. BULOROPT.

DEVIGE FOR WINDING THE ARMATURES F ELEOTRIGMAGHINES. No. 247,919. Patented O'qt. 4,1881.

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I I I I UNITED, STATES PATENT OFFICE.

ROBERT A. JOHNSTON AND WILLIAM H. BULCROFT, OF CLEVELAND, OHIO.

DEVICE FOR WINDING TI-IE ARMATURES 0F ELECTRIC MACHINES.

SPECIFICATION forming part of Letters Patent No. 247,919, dated October 4, 1881. Application filed May 2, 1881. (No model.)

To all whom it may concern: 7

Be it known that we, R0131. A. JOHNSTON and WM. H. BULOROFT, of Cleveland, Guyahoga county, and State of Ohio, have invented a new and Improved Winder for Arniatures of Electric Machines; and wedo hereby declare that the following is a full, clear, and exact description of the same, reference being bad to the accompanying drawings, and to the letters of reference marked thereon.

Our invention relates to certain improvementsin windinginsulated wire upon the armatures of dynamo-electric machines of that description particularly which have thearmature composed of an annular ring grooved transversely, and in the grooves of which the wire is wound, as upon the bobbins of an ordinary electro magnet. This process is now performed by hand, and is tedious and not satis factory, requiring much expenditure of time,

and rendering the insulating substance liable to injury from the uneven tension brought to bear upon it. This trouble we design to overcome by the attachment of a circular guide or stationary wheel to one of the sections be tween the bobbins, and around which a wheel I revolves, carrying the spool holding the insulated wire. As the wheel is revolvedeither by hand or any other suitable meansthe wire is unwound from the spool and wound upon the armature. When one ofthe grooves is thus filled with wire to the required extent the guide can be removed to the next section, there fastened, and the operation repeated until all the grooved places are tilled, as required, to complete the armature.

In the drawings, Figural is a plan view of the armature and side view of our windingdevice, and Fig. 2 shows a plan View of thewinding attachment and top view of the armature.

A is the armature, having the grooves B B and raised intermediate sections, 0 C.

E is the outer wheel, revolving in the guide or stationary wheel F, which is attached to the armature by a thumb-screw in the lug J. The outer wheel is made in two sections, so that it can be divided, and after placing the stationary wheel upon the armature and fastening it in place the outer wheel can be placed upon it and fastened by the thumb-screw I and its lugs, one of which is upon each section of the wheel, so that they fittogether, as shown, and firmly hold the parts upon the guide.

The stationary wheel is generally provided with a slot or openingleading from the periphery, so that it can be slipped on the armature and retained thereon by the lug J and its screw.

Gris the spool from which the wire is Wound. H is the wire, and H shows it being wound upon the. armature.

g is a rod attached to the revolving wheel and carrying the spool with it.

The ing 1 may be replaced by a hinge.

a is a screw, having the spring "1, which fits into a groovein the spool G, to maintain a tension upon the wire; or this spring may surround the circumference of the spool and the tension be changed by a thumb-screw binding the end around the spool and regulated as required.

Having thus described our invention, what we claim as new and desire to secure is l. The combination of the stationary wheel F and outer wheel, E, carrying the spool G, as and for the purposes set forth and described.

2. A device for windingjarmaturesof electric machines, consisting of a divided wheel, E, turning upon a stationary wheel or guide, F, attachel to an annular armature, as and for the purposes setl'orth and described.

3. .The combination of the sectional wheel E, having a screw, ;r,'spring 3/, attached thereto, and bobbin or wire-holder G, with the inner stationary wheel, F, as and for the purpose set forth.

4. The inner guide-wheel, F, having thumbscrews and lugs J, to adjust and hold it upon the armature A, as set forth and described.

This specification signed and witnessed this 8th day of April, 1881.

ROBT. A. JOHNSTON. W. H. BULGROFT. Witnesses:

JOHN CRocKER, W. F. OGDEN. 

